Originally Posted by hmai18
I've been contemplating the jump to a Gossamer 50/34 with a 12-23 rear cluster, but can't justify the added cost right now. I seem to be doing fine with my 53/39 and 12-27, so I'm in no big hurry to change over.
FYI a 34-23 is 38.8 gear inches and a 39-27 is 38 gear inches so you are not gaining anything on your low end by doing this.